/*
 * Copyright (c) 2009-2010, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "alkes/media/ImageDecoder.h"
#include "alkes/media/ImageBufferFactory.h"

namespace alkes {

ImageDecoder::ImageDecoder(ImageBufferFactory* factory)
: result_(0)
, factory_(factory)
{
}

ImageDecoder::~ImageDecoder()
{
    if (result_)
        result_->release();
}

ImageBufferFactory* ImageDecoder::getImageBufferFactory()
{
    return factory_;
}

ImageBuffer* ImageDecoder::getResult()
{
    ImageBuffer* result = result_;
    result_ = 0;
    return result;
}

bool ImageDecoder::decode(const char* imagefile)
{
    return onDecode(imagefile);
}

bool ImageDecoder::decode(const void* address, uint32_t size)
{
    return onDecode(address, size);
}

bool ImageDecoder::onDecode(const char* /*imagefile*/)
{
    // default implementation
    return false;
}

bool ImageDecoder::onDecode(const void* /*address*/, uint32_t /*size*/)
{
    // default implementation
    return false;
}

ImageBuffer* ImageDecoder::createImageBuffer(uint16_t width, uint16_t height, PixelFormat format)
{
    return factory_->createImageBuffer(width, height, format);
}

bool ImageDecoder::registerImageBuffer(ImageBuffer* buffer)
{
    AL_PRE_COND(buffer, false);

    result_ = buffer;

    return result_ != 0;
}

}
